Defining thresholds of sustainable impact on benthic communities in relation to fishing disturbance

Abstract While the direct physical impact on seabed biota is well understood, no studies have defined thresholds to inform an ecosystem-based approach to managing fishing impacts. We addressed this knowledge gap using a large-scale experiment that created a controlled gradient of fishing intensity a...

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Autores principales:	G. I. Lambert, L. G. Murray, J. G. Hiddink, H. Hinz, H. Lincoln, N. Hold, G. Cambiè, M. J. Kaiser
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2017
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/b4f246ddb0ff43d9a8cd359ff0db8ace
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spelling	oai:doaj.org-article:b4f246ddb0ff43d9a8cd359ff0db8ace2021-12-02T16:07:06ZDefining thresholds of sustainable impact on benthic communities in relation to fishing disturbance10.1038/s41598-017-04715-42045-2322https://doaj.org/article/b4f246ddb0ff43d9a8cd359ff0db8ace2017-07-01T00:00:00Zhttps://doi.org/10.1038/s41598-017-04715-4https://doaj.org/toc/2045-2322Abstract While the direct physical impact on seabed biota is well understood, no studies have defined thresholds to inform an ecosystem-based approach to managing fishing impacts. We addressed this knowledge gap using a large-scale experiment that created a controlled gradient of fishing intensity and assessed the immediate impacts and short-term recovery. We observed a mosaic of taxon-specific responses at various thresholds. The lowest threshold of significant lasting impact occurred between 1 and 3 times fished and elicited a decrease in abundance of 39 to 70% for some sessile epifaunal organisms (cnidarians, bryozoans). This contrasted with significant increases in abundance and/or biomass of scavenging species (epifaunal echinoderms, infaunal crustaceans) by two to four-fold in areas fished twice and more. In spite of these significant specific responses, the benthic community structure, biomass and abundance at the population level appeared resilient to fishing. Overall, natural temporal variation in community metrics exceeded the effects of fishing in this highly dynamic study site, suggesting that an acute level of disturbance (fished over six times) would match the level of natural variation. We discuss the implications of our findings for natural resources management with respect to context-specific human disturbance and provide guidance for best fishing practices.G. I. LambertL. G. MurrayJ. G. HiddinkH. HinzH. LincolnN. HoldG. CambièM. J. KaiserNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 7, Iss 1, Pp 1-15 (2017)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q G. I. Lambert L. G. Murray J. G. Hiddink H. Hinz H. Lincoln N. Hold G. Cambiè M. J. Kaiser Defining thresholds of sustainable impact on benthic communities in relation to fishing disturbance
description	Abstract While the direct physical impact on seabed biota is well understood, no studies have defined thresholds to inform an ecosystem-based approach to managing fishing impacts. We addressed this knowledge gap using a large-scale experiment that created a controlled gradient of fishing intensity and assessed the immediate impacts and short-term recovery. We observed a mosaic of taxon-specific responses at various thresholds. The lowest threshold of significant lasting impact occurred between 1 and 3 times fished and elicited a decrease in abundance of 39 to 70% for some sessile epifaunal organisms (cnidarians, bryozoans). This contrasted with significant increases in abundance and/or biomass of scavenging species (epifaunal echinoderms, infaunal crustaceans) by two to four-fold in areas fished twice and more. In spite of these significant specific responses, the benthic community structure, biomass and abundance at the population level appeared resilient to fishing. Overall, natural temporal variation in community metrics exceeded the effects of fishing in this highly dynamic study site, suggesting that an acute level of disturbance (fished over six times) would match the level of natural variation. We discuss the implications of our findings for natural resources management with respect to context-specific human disturbance and provide guidance for best fishing practices.
format	article
author	G. I. Lambert L. G. Murray J. G. Hiddink H. Hinz H. Lincoln N. Hold G. Cambiè M. J. Kaiser
author_facet	G. I. Lambert L. G. Murray J. G. Hiddink H. Hinz H. Lincoln N. Hold G. Cambiè M. J. Kaiser
author_sort	G. I. Lambert
title	Defining thresholds of sustainable impact on benthic communities in relation to fishing disturbance
title_short	Defining thresholds of sustainable impact on benthic communities in relation to fishing disturbance
title_full	Defining thresholds of sustainable impact on benthic communities in relation to fishing disturbance
title_fullStr	Defining thresholds of sustainable impact on benthic communities in relation to fishing disturbance
title_full_unstemmed	Defining thresholds of sustainable impact on benthic communities in relation to fishing disturbance
title_sort	defining thresholds of sustainable impact on benthic communities in relation to fishing disturbance
publisher	Nature Portfolio
publishDate	2017
url	https://doaj.org/article/b4f246ddb0ff43d9a8cd359ff0db8ace
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Defining thresholds of sustainable impact on benthic communities in relation to fishing disturbance

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